let me correct that. you know, gang, the hang glider-- [laughing] thanks, paul. you know, paul casey is a science writer, you know, and he's taking our class? he writes--he makes his living writing science articles. anyway, anyway, gang-- is this, gang, we have to be patient of where we are in our history. everything doesn't happen at once. we're still growing, you know? now, with this fusion, how come we don't have fusion power plants? it's too hard to take these things and push them together. it's enormous electrical repulsion. if you'd heat this stuff up to a gas, maybe above a hundred million degrees, these things will be fast-- going fast enough, they'll scrunch. how does the sun and the stars do it? brute force, gravity. [makes sound] i say, "i don't care electrical repulsion, no electrical repulsion." wham. right in. and the sun and the stars is just brute force these things together, and you get your fusion. now, how do we get that-- how do we do that in earth? we've been trying brute force. with plasma reactors. heat these things up to over a hundred million degrees, get that gas, pinch it with magnetic fields. boom. try to get it defused. has the human race done that? yes, we've done that.